$OpenBSD: patch-libclamav_str_c,v 1.12 2015/12/01 23:25:09 sthen Exp $

allow for machine arch where char is unsigned by default (e.g. arm, powerpc)

--- libclamav/str.c.orig	Fri Sep 18 21:48:45 2015
+++ libclamav/str.c	Tue Dec  1 22:19:26 2015
@@ -167,9 +167,9 @@ int cli_hex2str_to(const char *hex, char *ptr, size_t 
 
     for(i = 0; i < len; i += 2) {
 	if((c = cli_hex2int(hex[i])) >= 0) {
-	    val = c;
+	    val = (char)c;
 	    if((c = cli_hex2int(hex[i+1])) >= 0) {
-		val = (val << 4) + c;
+		val = (val << 4) + (char)c;
 	    } else {
 		return -1;
 	    }
